Image switching attachment for a telescope or similar optical instrument



FIG. 1 is a perspective view of an image switching attachment for a telescope or similar optical instrument, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and

FIG. 7 is an enlarged cross-sectional view thereof, taken along line 7--7 of FIG. 5 and showing portions of a telescope, eyepiece and camera in broken lines for illustrative purposes only. 

The ornamental design for an image switching attachment for a telescope or similar optical instrument, as shown and described. 